Denon DP-S1: any experience with it?

A denon dp-s1 transport in very good condition is going to be available for sale. I have good memories from the only occasion I auditioned it ... but it was a looong time ago.
A few questions:
- how does its performance compares with other transports, like the ones from wadia, cec, ML ...
- when was the production of the DP-s1 discontinued? (the model was launched on 1993)
- are there any reliability issues with this transport? Does denon still keep spare parts for it?
- What would be the fair price for such a unit? (it was one of the latest units produced)

Thank you in advance,
Vermeer